weird deck of cards controlling a dinosaur possessed by an Evil King from a dream someone had in the future seeking revenge for the death of his cat, Waffles

Multiattack. The tyrannosaurus makes two attacks: one with its bite and one with its tail. It can't make both attacks against the same target.

Bite. Melee Weapon Attack: +10 to hit, reach 10 ft., one target. Hit: 33 (4d12 + 7) piercing damage. If the target is a Medium or smaller creature, it is grappled (escape DC 17). Until this grapple ends, the target is restrained, and the tyrannosaurus can't bite another target.

Tail. Melee Weapon Attack: +10 to hit, reach 10 ft., one target. Hit: 20 (3d8 + 7) bludgeoning damage.

Fetid Cloud (1/Day). A 10­-foot radius of disgusting green gas extends out from the. The gas spreads around corners, and its area is lightly obscured. It lasts for 1 minute or until a strong wind disperses it. Any creature that starts its turn in that area must succeed on a DC 11 Constitution saving throw or be poisoned until the start of its next turn. While poisoned in this way, the target can take either an action or a bonus action on its turn, not both, and can't take reactions.

cannon ball.  the creature has 3 cannons mounted on its back Ranged Weapon Attack: +10 to hit, range 40/180 ft., one target. Hit: 26 (5d8 + 7) bludgeoning damage.

Total Control. The An-Rok-To-Ma can attempt to take complete control of any creature it is grappling. The grappled creature makes a DC 30 Will saving throw (Con - 1/4 damage taken) or is immediately taken control of by the An-Rok-To-Ma. The ARTM takes total control of the host and takes no damage from attacks that land on the host until the host is killed. The ARTM has full access to the host's abilities and absorbs all the information about the host so that none may tell the difference. A DC 25 Investigation check reveals a black viscous goo leaking from the host's ear which is the only indication of the ARTM having taken control of the host.